v2.4.0.8

Segments - Net Premiums (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | $ 463,418 | $ 455,847 | $ 1,650,426 | $ 1,458,640
% of Total Net premiums written | 100.00% | 100.00% | 100.00% | 100.00%
Net premiums earned | 508,126 | 448,973 | 1,509,841 | 1,324,585
% of Total Net premiums earned | 100.00% | 100.00% | 100.00% | 100.00%
Diversified Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 185,620 | 193,943 | 588,164 | 626,220
% of Total Net premiums written | 40.10% | 42.50% | 35.60% | 42.90%
Net premiums earned | 198,966 | 200,020 | 573,551 | 603,613
% of Total Net premiums earned | 39.20% | 44.50% | 37.90% | 45.60%
AmTrust Quota Share Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 259,633 | 186,258 | 895,029 | 607,902
% of Total Net premiums written | 56.00% | 40.90% | 54.30% | 41.70%
Net premiums earned | 243,408 | 177,293 | 725,100 | 512,988
% of Total Net premiums earned | 47.90% | 39.50% | 48.10% | 38.70%
NGHC Quota Share Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 18,165 | 75,646 | 167,233 | 224,518
% of Total Net premiums written | 3.90% | 16.60% | 10.10% | 15.40%
Net premiums earned | 65,752 | 71,660 | 211,190 | 207,984
% of Total Net premiums earned | 12.90% | 16.00% | 14.00% | 15.70%
Property [Member] | Diversified Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 26,783 | 41,667 | 112,861 | 157,628
% of Total Net premiums written | 5.80% | 9.10% | 6.80% | 10.80%
Net premiums earned | 41,652 | 50,688 | 116,970 | 164,739
% of Total Net premiums earned | 8.20% | 11.30% | 7.70% | 12.40%
Casualty [Member] | Diversified Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 122,600 | 114,655 | 359,816 | 349,356
% of Total Net premiums written | 26.40% | 25.20% | 21.80% | 24.00%
Net premiums earned | 126,091 | 119,572 | 359,988 | 334,559
% of Total Net premiums earned | 24.80% | 26.60% | 23.80% | 25.30%
Accident and Health [Member] | Diversified Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 9,040 | 9,174 | 31,649 | 34,484
% of Total Net premiums written | 2.00% | 2.00% | 1.90% | 2.30%
Net premiums earned | 8,994 | 11,176 | 27,356 | 32,547
% of Total Net premiums earned | 1.80% | 2.50% | 1.80% | 2.50%
International [Member] | Diversified Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 27,197 | 28,447 | 83,838 | 84,752
% of Total Net premiums written | 5.90% | 6.20% | 5.10% | 5.80%
Net premiums earned | 22,229 | 18,584 | 69,237 | 71,768
% of Total Net premiums earned | 4.40% | 4.10% | 4.60% | 5.40%
Small Commercial Business [Member] | AmTrust Quota Share Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 136,725 | 84,024 | 434,951 | 256,198
% of Total Net premiums written | 29.50% | 18.40% | 26.40% | 17.60%
Net premiums earned | 130,472 | 81,287 | 350,295 | 218,086
% of Total Net premiums earned | 25.70% | 18.10% | 23.20% | 16.40%
Specialty Program [Member] | AmTrust Quota Share Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 41,698 | 14,931 | 115,313 | 63,877
% of Total Net premiums written | 9.00% | 3.30% | 7.00% | 4.40%
Net premiums earned | 39,661 | 9,828 | 105,122 | 60,414
% of Total Net premiums earned | 7.80% | 2.20% | 7.00% | 4.60%
Specialty Risk and Extended Warranty [Member] | AmTrust Quota Share Reinsurance Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 81,210 | 87,303 | 344,765 | 287,827
% of Total Net premiums written | 17.50% | 19.20% | 20.90% | 19.70%
Net premiums earned | 73,275 | 86,178 | 269,683 | 234,488
% of Total Net premiums earned | 14.40% | 19.20% | 17.90% | 17.70%
Automobile Liability [Member] | NGHC Quota Share Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 9,707 | 39,019 | 95,631 | 118,288
% of Total Net premiums written | 2.10% | 8.60% | 5.80% | 8.10%
Net premiums earned | 38,015 | 38,374 | 122,118 | 113,168
% of Total Net premiums earned | 7.50% | 8.60% | 8.10% | 8.50%
Automobile Physical Damage [Member] | NGHC Quota Share Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net premiums written | 8,458 | 36,627 | 71,602 | 106,230
% of Total Net premiums written | 1.80% | 8.00% | 4.30% | 7.30%
Net premiums earned | $ 27,737 | $ 33,286 | $ 89,072 | $ 94,816
% of Total Net premiums earned | 5.40% | 7.40% | 5.90% | 7.20%

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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17) -URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574992-122915 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(c)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums written. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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